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  1. Elecbegginner

    Please help me recognize clamp-meter's cap ratings for replacement

    Hi everyone in this forum . So 2 days ago i was trying to repair a microwave , i decided to check a big AC capacitor with a clamp meter , i used AC voltage mode , and the meter just shut down as soon as i connected the probes to the AC capacitor . I opened the clamp meter and found that 2...
  2. Elecbegginner

    Replacing a dual diode power rectifier with 2 single diodes ?

    I need to replace a damaged hyperfast rectifier diode 60CPH03 , but i cant find it nor its equivalent , and the seller said that il need to wait 1 month until i get it . Am wandering if i can use single diodes and run them together as the original one .???
  3. Elecbegginner

    What's the purpose of using Hyperfast Rectifiers and IGBTs

    Hello everybody . In the past i fixed a lot of heavy current soldering kits like in the picture , and i usually find faulty semi conductors like IGBTs , MOSFETS , Hyperfast rectifiers , Am wandering what makes them important in this type of kits ??? and how do they perform on the soldering...
  4. Elecbegginner

    looking for faulty parts on a JM concept temp indicator .

    Hi everybody . Today i started looking at a temperature digital indicator .JM concept AK 9200 N . I found a bad electrolytic capacitor rated at 100 uF/35V at 105 C° . I have a similar working capacitor ( the black one on the card )but the max temp is 85 C° only , so i don't know if its ok to...
  5. Elecbegginner

    My future automated industrial system (gathering some ideas )

    Hi everyone , As an itroduction to my topic i would love to just explain a little bit about automation in case someone want to feed his curiosity : Automation is the use of machines, control systems and information technologies to optimize productivity in the production of goods and...
  6. Elecbegginner

    BT150 Thyristor equivalent(BT151) has just exploded !!!

    Hello everyone after fixing a speed variation card with the help of a triac, now i got one with the same problem , but it has a thyristor , the original thyristor's code is BT150, so i bought its equivalent" BT 151" . But when i turned on the card , after several switching the motor has turned...
  7. Elecbegginner

    How to calculate the intensity delivered by this AC motor

    I have a motor witch i will use to check if a card is working , but for that the card uses a 12 A triac . The motor that i got is a monophased 220 V one just like the original but this one is a bit smaller , so i am worried about that . The motor contains a STATOR with two coils shielding a...
  8. Elecbegginner

    Having negative reading with 2 DMMs !!

    Hello everyone . I have two measurement tools , one for multi-purpose and one witch is a MEGOHMETER . The megaohmmeter (Chauvin arnoux 6547) shows twoo readings normally , one is the DC voltage and bellow a reading for the resistance . When i turn on the device , i get about - 4700 vdc...
  9. Elecbegginner

    Another circuit to analyse (MALAXOR speed variator)

    Am really interested in this shematic that belongs to a MALAXOR with speed variation , and i want to know if possible step by step how it works and what role plays the transistor and the triac in it . So the card actually have a 220 v AC input with two terminals M1 and M2 that goes to a...
  10. Elecbegginner

    Please help understand this circuit .

    Hello everyone in this vry helpful forum . Am trying to understand this circuit that belongs to the entry part of an electronic card .; the output goes to a lamp . Actually i have two identic cards , but one is not working ; So when i measure the number 2 (yellow one) capacitor on the working...
  11. Elecbegginner

    Trying to fix an electronic card ( speed variator)

    Hello everyone am new to the forum and seriously i need help on some cards . So i have a card to fix , after looking at it i found out that the transformer output pins are covered with carbon , clearly its burned , i checked the condasator and its out of service . Now how to repair the...
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